MESON Chess Problem Database

Problem Display
PID: 134904 (4RK1B/2p1N3/2p1b3/q1pp2p1/Rn1Pk1P1/rn1pp1Qp/BN6/6b1 w - - 0 1)

Retter, Yosef

The Problemist, 2009

4RK1B/2p1N3/2p1b3/q1pp2p1/Rn1Pk1P1/rn1pp1Qp/BN6/6b1

#2

10 + 15

SOLUTION

  • SOUND
  • Sets
    • 1...Bxg4
      • 2.Qxg4#
    • 1...Bf5
      • 2.Sxf5#
    • 1...Bc8
      • 2.Sxc8#
    • 1...Bg8
      • 2.Sxg8#
  • Tries
    • 1.Sg8?
      • threat
        • 2.Rxe6#
      • 1...Sxd4
        • 2.Sf6#
      • 1...Qa8!
    • 1.Qg2+?
      • 1...Kf4
        • 2.Sg6#
        • 2.Be5#
      • 1...hxg2!
  • Keys
    • 1.Sxd5!
      • threat
        • 2.Sc3#
      • 1...Kxd5
        • 2.Qe5#
      • 1...Sxd4
        • 2.Sf6#
      • 1...Sxa2
        • 2.Sf6#
      • 1...Sxd5
        • 2.Rxe6#
      • 1...cxd4
        • 2.Sf6#
      • 1...cxd5
        • 2.Rxe6#
      • 1...Sa1
        • 2.Rxe6#
      • 1...Sc1
        • 2.Rxe6#
      • 1...Sd2
        • 2.Rxe6#
      • 1...Sc2
        • 2.Sf6#
      • 1...Sa6
        • 2.Sf6#

There are these versions: 135417

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 4
  • Sets
    • B(n);OGATE,XP(F)::QAR2(C),XB(n)
    • B(n);::R(H)+S(G),XB(n)
  • Tries
    • Try
      • S(G);P_PINB(n)
      • Threat
        • R(H),XB(n)
      • Vars
        • S(c);SBLOCK,XP(E)::S(G)
      • Refutation
        • Q(i);P_PINR(H)
    • Try
      • Q(C);CHECK
      • Refutation
        • P(f);XQ(C)
  • Actual
    • S(G);P_PINB(n),XP(k)
    • Threat
      • S(G)
    • Vars
      • K(h);N_SPINB(n),P_SPINS(c),S_FLIGHT,XS(G)::QAR1(C)
      • S(c);SBLOCK,XP(E)::S(G)
      • S(g);XB(A)::S(G)
      • S(g);SBLOCK,XS(G)::R(H),XB(n)
      • P(j);SBLOCK,XP(E)::S(G)
      • P(m);SBLOCK,XS(G)::R(H),XB(n)
      • S(c);::R(H),XB(n)
      • S(g);::S(G)
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